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124 lines
3.6 KiB
C
124 lines
3.6 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPointSource.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkPointSource
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* @brief create a random cloud of points
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*
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* vtkPointSource is a source object that creates a user-specified number
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* of points within a specified radius about a specified center point.
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* By default location of the points is random within the sphere. It is
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* also possible to generate random points only on the surface of the
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* sphere. The output PolyData has the specified number of points and
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* 1 cell - a vtkPolyVertex containing all of the points.
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*/
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#ifndef vtkPointSource_h
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#define vtkPointSource_h
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#include "vtkFiltersSourcesModule.h" // For export macro
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#include "vtkPolyDataAlgorithm.h"
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#define VTK_POINT_UNIFORM 1
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#define VTK_POINT_SHELL 0
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class vtkRandomSequence;
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class VTKFILTERSSOURCES_EXPORT vtkPointSource : public vtkPolyDataAlgorithm
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{
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public:
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static vtkPointSource* New();
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vtkTypeMacro(vtkPointSource, vtkPolyDataAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* Set the number of points to generate.
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*/
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vtkSetClampMacro(NumberOfPoints, vtkIdType, 1, VTK_ID_MAX);
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vtkGetMacro(NumberOfPoints, vtkIdType);
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//@}
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//@{
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/**
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* Set the center of the point cloud.
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*/
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vtkSetVector3Macro(Center, double);
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vtkGetVectorMacro(Center, double, 3);
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//@}
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//@{
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/**
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* Set the radius of the point cloud. If you are
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* generating a Gaussian distribution, then this is
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* the standard deviation for each of x, y, and z.
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*/
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vtkSetClampMacro(Radius, double, 0.0, VTK_DOUBLE_MAX);
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vtkGetMacro(Radius, double);
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//@}
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//@{
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/**
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* Specify the distribution to use. The default is a
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* uniform distribution. The shell distribution produces
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* random points on the surface of the sphere, none in the interior.
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*/
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vtkSetMacro(Distribution, int);
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void SetDistributionToUniform() { this->SetDistribution(VTK_POINT_UNIFORM); }
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void SetDistributionToShell() { this->SetDistribution(VTK_POINT_SHELL); }
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vtkGetMacro(Distribution, int);
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//@}
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//@{
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/**
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* Set/get the desired precision for the output points.
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* vtkAlgorithm::SINGLE_PRECISION - Output single-precision floating point.
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* vtkAlgorithm::DOUBLE_PRECISION - Output double-precision floating point.
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*/
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vtkSetMacro(OutputPointsPrecision, int);
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vtkGetMacro(OutputPointsPrecision, int);
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//@}
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//@{
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/**
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* Set/Get a random sequence generator.
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* By default, the generator in vtkMath is used to maintain backwards
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* compatibility.
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*/
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virtual void SetRandomSequence(vtkRandomSequence* randomSequence);
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vtkGetObjectMacro(RandomSequence, vtkRandomSequence);
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//@}
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protected:
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vtkPointSource(vtkIdType numPts = 10);
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~vtkPointSource() override;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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double Random();
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vtkIdType NumberOfPoints;
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double Center[3];
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double Radius;
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int Distribution;
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int OutputPointsPrecision;
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vtkRandomSequence* RandomSequence;
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private:
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vtkPointSource(const vtkPointSource&) = delete;
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void operator=(const vtkPointSource&) = delete;
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};
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#endif
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